DE19925864C1 - Grenade launcher for fixture to rifle has launching barrel pivotable around static cross axis near to mouth, with base housing supporting trigger mechanism - Google Patents

Abstract

For fixture to a rifle (1) the grenade launcher (13) has a launching barrel (15) which is pivotable around a static cross axis near to its mouth. A base housing (17) supports a trigger mechanism (21) and has a thrust base. A connecting piece (37) supports the cross axis and is firmly connected to the base housing. The connecting piece encloses the grenade launching barrel so far over at least a part of its length that only a longitudinal slot (39) remains disclosed, which is necessary for the outward pivoting of the grenade launcher barrel.

Description

The invention relates to an attached grenade launcher bring on a rifle, preferably an assault rifle, with a grenade launcher barrel that is close to his coin manually arranged, fixed to the rifle transverse axis is pivotable, with a bottom case that has a trigger device and a trigger and a bumper has, and with a connector that the Querach se carries and is connected to the floor case (Preamble of claim 1).

All location names used here such as "above", "horizontal" etc. assume a rifle with a Add-on grenade launcher that hits normal at horizon taler shot direction is held. "Front" points in Firing direction. The extension grenade launcher is preferred under the barrel is mounted and ends in front of the rifle magazine; other methods of attachment are also possible and ge possibly advantageous.

Mount one on a rapid-fire rifle (US rifle M 16) The grenade launcher is known from US 3,641,691 A. The Grenade launcher is in place below the gun barrel  the fore-end or hand protection. His Barrel extends approximately parallel to the gun barrel and has a horizontal cross next to the mouth axis around which the barrel with its back down can be pivoted. In the firing position of the Granatwer ferlaufes is at the back of a local stes floor housing that forms a push floor. Is in it attached a tee from which an Ab train extends downwards.

The rifle magazine is used to pull the trigger with the right or left hand like a handle sums up. However, the magazine proves to be inadequate as a handle Lich, since it usually has a little play in its seat and you therefore perceive it as an unsafe hand support det. In addition, the recoil presses the angular magazine the hand gripping it, what will be painful and about this can overload the magazine holder.

The transverse axis and the bottom housing are ver relatively thin rail connected together. The the rear end of the barrel is in the fire position with the Bottom housing releasably locked.

To release the barrel, a lock is first ent locks and the barrel with its rear end down pivoted. When unlocking the knock-off device curious; excited. When the barrel tilts, one becomes more complicated Ejector mechanism (a so-called ejector) operated, which the fired cartridge case by spring eject the kung completely and automatically. In the In practice, it is usually sufficient that the end thrower mechanism loosens the cartridge case so far that them with one thumb and one finger Gripped by hand and completely removed without effort can. The ejector mechanism is thin in the mentioned  NEN rail attached, which its structural strength weakens.

The well-known grenade launcher would be a very useful one Implement, he wouldn't have some drawbacks that make him unsure and make it unreliable.

Like all break-barrel weapons with a self-cocking device, the known grenade launcher has the disadvantage that the tee is inevitably cocked when reloading. The loaded garnet thrower therefore has a constantly striking tee. Therefore, a complex security device is required to prevent a shot from being triggered unintentionally, for example by accidentally operating a safety lever and / or through a branch crossing a shrubbery. This pro blem does not occur in the grenade launcher of US 3,507,067 because this has a clamping trigger, which is the knock-off device tensions only when pulling off. For reloading this Gra natwerfer the barrel opposite the fixed floor case straight moved to the front.

On the use of the rifle magazine as a handle related problems have already been pointed out.

Tipping the barrel down is also not special cheap, for example when the shooter is in a foxhole Has taken a stand. Then the rifle is usually at rest with the front part on a support and must therefore for Reloading the grenade launcher first raised or to the side be tipped.

However, the removal of the empty patro is particularly disadvantageous sleeve, because it often jams and only with a Bajo netts or a similar tool can be removed. Out The ejector has proven to be reasons that are not apparent proven completely unreliable. Also greasing the cartridge - an anyway problematic because of the risk of contamination help - does not help much. The ejector succeeds in many ways not even that  Loosen the cartridge case so far that it ent can be removed, let alone their complete evaluation fen.

Based on this problem, the invention is the Task based on the usability of a cultivation Increase grenade launchers, in particular, make it more reliable to make and simplify.

This object is achieved in that the generic grenade launcher mentioned at the beginning additionally has the following features: the connection piece surrounds the barrel at least partially and over min at least part of its length so that in essence Chen only left one longitudinal slot in the connector is required to swing out the barrel (Claim 1).

It has surprisingly turned out that the Difficulties with moving out or indicated above Ejecting the cartridge will disappear when the rail, which connects the transverse axis and the floor case, almost Completely rigid and the bottom almost full lig rigidly attached to this rail.

In the known add-on grenade launcher presumably deform Lich the narrow rail and / or its connection with bouncing the bump floor during the shot. Hereby the impact floor takes a different angular position for a short time relative to the soul axis of the barrel. During the shot but the cartridge case is plastically deformed ("fire deformed") and then from the resilient bumper rammed into the chamber again, where they found again which is being reshaped and because of the ones it exercises Spring forces are stuck in the cartridge chamber.  

In the invention, however, form the bracket of the cross axis, the rail and the bottom housing around the barrel closing, quite rigid pipe that is only ge slits is that the grenade launcher is swung out that can. This tubular connector has in Attempted to be sufficiently stiff to recoil absorb forces that the cartridge on the bump exercises. Sleeve clamps, such as those used in the generic Grenade launchers occur frequently, were in the fiction not noticed grenade launcher, not even with the Ver completely dry, coated steel sleeves.

Of course, the connector according to the invention heavier than the previous rail. With this front The disadvantage is the very significant advantage part of the functional security purchased.

According to a preferred embodiment of the invention (Claim 2), the impact floor has a side to the longitudinal slit open ledge, and the grenade ferlauf has one in the back of the longitudinal slot protruding extension protruding to the rear, the bar with a complementary counter training engages behind. This will cause the Bumper and grenade launcher barrel in the direction of the longitudinal prevents slit; or at least on the tolerance measure limited between last and counter training. Self when the grenade launcher is used by heavy, continuous use worn out or hard under the toughest conditions the intervention of the Last in the counter training reliably that the shock ground where it adjoins the longitudinal slot from the can bend away the rear end of the barrel.

The bar and the counter training can any, com have complementary shapes as long as they swing out  of the barrel, as well as the reliable fit of the support surface of groin and counter training Afford. This support surface is preferred (claim 3) Chen formed as a circular cylinder jacket surfaces, the Axis with the central axis of the transverse axis completely or close to collapse. This ensures that the support surfaces are pressed flat against each other during the shot and support each other as much as possible.

The tubular connector goes into the bottom case over that the tube shape closed to the rear further leads. As such, it would be useful to have the connector also in front of the transverse axis in closed tube form extend at the front. According to the invention (claim 4) but it is advantageous that the longitudinal slot is open towards the front is. The connector thus has no extension forward on, which means the purchase by the invention weight increase of the mounted grenade launcher is bordered.

For the same reason, the connector has minde at least one, preferably several recesses (Claim 5), which, insofar as they are approximately in the form of all sides closed breakthroughs are executed, the bending tool Ability of the connector is insignificant at best influence.

Another significant weight saving, but also He increase in the bending stiffness of the connector achieved according to the invention in that the ejection mecha mechanism or a simpler extractor mechanism leave and by two opposite Ausspa stanchions at the back of the Granatwer's chamber ferlaufes is replaced (claim 6). The connector can because of this training alone by face points of bending stiffness are formed because the  No receptacles for the ejection mechanism are required. In some cases, this measure is already omitted me the jamming of the abge described above shot cartridge case. Through the two cutouts through it the shot cartridge case from thumb and a shooter's finger gripped and stripped. There at also the noisy impact of the Pa bullet on the ground, which is treacherous near the enemy can be because it pre-charges the enemy before reloading signaled change of position of the shooter signals. The shooter who is reloading the empty cartridge case grabs it by hand, quietly puts it aside or put it in a pocket.

The transverse axis can, as in the generic state of the Technology is horizontal; here it is necessary that the transverse axis not only near the mouth of the barrel, but also runs over this to avoid a collision of the Avoid barrel with the rifle barrel above. Preferably (claim 7), however, the transverse axis runs ver tical. Here it would be possible on the top and bottom of the barrel to form pivot pins or otherwise bring, which form the transverse axis. According to the invention however, it is advantageous to have the vertical transverse axis arrange next to the barrel. This makes the run with its back at a given swivel angle further out of the gun and the cartridges sleeve easier to remove. In this way, too Height of the add-on grenade launcher to a minimum wrestled.

However, the above training closes the possibilities possibility that the barrel either to the right or can be swung out to the left. The swiveling takes place the barrel or its rear end preferably after  left (claim 8). A left-handed shooter must accordingly get used to it when reloading with his hand (the left hand) remove the cartridge case and not, like a right-handed shooter, with his gun under supporting hand. But a simple spring can be used for this direction should be provided, the pivoting of the barrel effected or at least supported, because the swing out always on the same side.

The generic grenade launcher has the ge mentioned disadvantage that that with the extension grenade launcher equipped rifle for reloading always from its position must be moved, especially in field positions is disadvantageous. This disadvantage is due to the Invention modern grenade launcher largely fixed, since this the Swings the barrel sideways. At most is before the Nachla a slight lifting of the front part of the rifle res required.

For reasons of weight saving, the genus bil the grenade launcher does not have its own handle. Instead sen is an unfavorable grip for those who pull the trigger Hand accepted around the rifle magazine. The Ab train should not be too stiff, because the targeted actuation of a harder trigger because of the unfavorable grip is not possible. A soft deduction however, is always a security risk.

In contrast, the invention provides a clamping trigger device before (claim 9). This is more stiff than that Deduction of the known grenade launcher, but this will gained significant security benefits because of this The clamping device always remains unstressed - except immediately before the shot. It's also so heavy gig that a thin branch that when crossing a Ge bushes can go unnoticed before the deduction, this  cannot operate. Of course the tension deduction is direction designed so that when unstressed A direction of their firing pin always in its rear position is, as in a return lock, and not protrudes forward from the bumper.

Such a clamping trigger device does not require a safety device tion; if a fuse is still provided, then it is sufficient a simple fuse that only blocks the trigger, because the hammer even with mechanical damage oh Do not knock off a powerful trigger pull can.

Preferably, the grenade launcher of the invention is also a handle is formed, on the nä below coming in. Such an anatomically shaped Grip allows a shot to be fired despite the Deduction without sacrificing accuracy. This in Comparison to the well-known grenade launcher, in which the unfavorably shaped handle (the magazine) the target difficult to pull off.

There is a mechanism for locking and unlocking the barrel required, which is in its rest position if the barrel is in its firing position. An actuator This mechanism causes the barrel to tip over or is tipped by a suspension. Is preferred for the backward movement of the barrel in its firing position Ne further operation of this mechanism required; in In this case, the barrel automatically snaps in its firing position in the mechanism. Such mechanisms are in large number of barrel barrels known, but are these mechanisms are usually quite complicated.

According to a development of the invention, a derter rocker provided, which tilts about a tilt axis  bar, which is at a distance from the transverse axis and the sea Len axis of the grenade launcher barrel perpendicular to these that extends. An end spaced from this tilt axis the rocker arm engages in its rest position under spring force in training on the outside of the grenade launcher run in near its rear end. Will this Kipphe tipped out of the rest position, then he gives the gra natwerferlauf free, which then by its own suspension tion can swing out (claim 10).

The rocker arm attacks preferably in the middle of the barrel, see above that it is essentially vertical below the soul axis of the arranged in the firing position of the grenade launcher barrel is not. The rocker arm is preferably made of a flat Shaped piece of sheet metal.

The design of the grenade launcher barrel is preferably one groove-like depression in the outside, which par extends allel to the soul axis. So far the groove-like Not deepening, in the closing direction of the grenade launcher fes seen, far beyond its vertically deepest er convincing lies, the cylinder jacket-shaped exterior contour of the barrel as a guide curve for the locking end the rocker arm. In this way, the rocker arm is against its suspension automatically when closing the barrel steers and then falls into training or deepening on.

A cross lever can be attached to the rocker arm or a Swivel lever can be connected to the rocker arm in a rotationally fixed manner his. By pushing the cross or swivel lever towards un The rocker arm can then counteract, for example with the thumb the effect of its suspension can be tilted. Prefers (Claim 11), however, is the rocker arm over its kip pachse extended, and at the end of the extension a push button arranged, preferably as a ribbed Edge or ribbed end section of the sheet metal rocker arm is trained. The push button or ribbed end  cut protrudes from the floor case at a suitable point out and can be easily operated with the finger when the shooter fires the grenade launcher wishes to pan.

As noted above, the An according to the invention bau grenade launcher prefers its own grip (Claim 12) equipped with a trigger guard that protects the trigger from unwanted touch. The trigger guard is preferred and more preferably that Handle completely or largely made of plastic poses. Compared to the known cultivation Grenade launchers are aware of a weight disadvantage in buying genome men; the additional weight is when using Plastic relatively low.

The grip piece not only enables precise actuation the trigger and prevents the harmful Transfer of the grenade launcher recoil to the magazine, but also enables safe use in an emergency of the add-on grenade launcher without attached rifle.

In addition, the handle is preferred (claim 13) in Place within the trigger guard and before the trigger provided on which the push button or the ribbed En d section of the rocker arm emerges from above. This Push button can be from the index finger of the trigger operator Be operated by hand, i.e. pressed upwards. If the finger is on the trigger, for example when shooting, then it is Pushbutton operation excluded. Through the central arrangement of the push button before the trigger is au ßem also the grenade launcher of one of the invention Right and left-handed shooters are equally comfortable actionable.

The grenade launcher according to the invention is so trained det that he opposed the forend of the intended Rifle can be easily replaced.  

The simplest would be two cross holes, which by a latched pin are interspersed. Here it can ever but due to the occurring tolerances to errors men, as well as thermal stresses. That's why the Erfin strikes tion before (claim 14), only on the front a cross to arrange the hole that is able to Cross bore on the forearm of the associated rifle matches. As far as the cultivation according to the invention Grenade launcher attachable to different rifles there should be several corresponding holes hen. On the back of the grenade launcher is on both sides a slot arrangement provided by a Hal test pin is penetrated on the associated rifle. If the Slot arrangement is open to the rear, instead of Retaining pin a protruding, fixed transverse projection be trained on the rifle. The grenade launcher will then with the oblong holes over the transverse projections on the rifle slide and fixed by means of the cross pin. It can several slot arrangements can be provided if the Grenade launcher for attachment to different rifle models len is provided on which the transverse projections on under sit in different places.

The grenade launcher usually also includes one of the Sight of the rifle separate own sight, the usually attached to the rifle. Mostly it is as Frame or head visor trained, the high Elevati angle allowed.

To make it easier to attach the grenade launcher to the rifle, is preferably the sighting device for the grenade launcher also attached to this itself (claim 15). For this the grenade launcher has a bracket on each side, the sighting device optionally on one of the two Mounts can be attached so that the grenade launcher for a right- or left-handed shooter the appropriate one Has sights. The sighting device is ent neither set up for double-sided use, or  can be done with simple means, such as by implementing Tei len, for mounting on the right or left side of the grenade launcher. The brackets for the sights are arranged on the connector or trained to always have a good assignment to Aus to have the direction of the grenade launcher barrel.

As far as a sight with optics is used, must this sight, however, behind the add-on grenade launcher be attached to the rifle itself, otherwise the field of view will be closed would be small.

The rifle barrel is on top with the grenade launcher attached half of the connector and essentially in the middle this. So much for a gas piston unit for the rifle is, it is almost regularly above of the gun barrel. If desired, the grenade launcher be equipped with an additional hand protection, the in its effect the upper part of the rifle forearm corresponds, but is adapted to the grenade launcher, whose Arched connector and the gun barrel as well as if necessary, surrounds the gas piston unit.

The object of the invention is illustrated in the accompanying Drawing showing an embodiment of the invention Extension grenade launcher shows, for example, he closer purifies. The drawing shows:

Fig. 1: a side view of a rapid-fire rifle with attached grenade launcher, greatly reduced;

FIG. 2: a top view of the weapon of FIG. 1, on the same scale and with the grenade launcher barrel swung out;

Fig. 3: the front part of a rapid-fire rifle with attached grenade launcher, less reduced than in Figure 1 or 2 (rifle grip piece removed);

Fig. 4 is a side view of the add-on grenade launcher, seen from the right, less reduced than in FIG. 3;

Fig. 5: a side view of the mounted grenade launcher, seen from the left, partially cut and on the scale of Fig. 4;

FIG. 6 is a view of the add-on grenade launcher from the front, on the scale of Fig. 4; and

Fig. 7: an enlarged view of the barrel of the grenade launcher, seen from behind and on an enlarged scale.

All figures relate to the same embodiment. Same Reference numerals designate identical elements in all figures ment. Some reference numerals are for the sake of clarity not listed in all figures that match the corresponding Show elements.

Fig. 1 shows the side view of a modern Schnellfeu ergewehres 1 , which has a rifle barrel 3 , a rifle housing 5 made of plastic, a magazine 7 , an optical sight 9 and a rifle grip 11 with trigger and fire lever.

The rifle is for a modern, small-caliber cartridge set up with a small amount of propellant gets along. This amount of propellant charge is not enough to a grenade that looks like a hand grenade comes close to driving. If you still want such a gra Shoot nate, then you have your own large calibri Propellant cartridge required.  

This cartridge is shot in an extension grenade launcher 13 , which is arranged on the rifle 1 instead of the forearm.

The rifle (not shown) on handgun 1 is removed. Instead, the grenade launcher 13 is attached under the barrel of the rifle, by means of a customary, latchable fastening pin 33 and an elongated hole arrangement 35 . The elongated hole arrangement 35 consists of bilaterally formed on the grenade launcher 13 , open to the rear elongated holes, which are pushed from the front on each egg nen cross projection, which protrudes from the Gewehrgehäu se 5 .

The grenade launcher 13 has a grenade launcher barrel 15 which extends approximately parallel to the rifle barrel 3 in the firing position and lies below this. In the loading position, the grenade barrel 13 is pivoted out to the left, as shown in Fig. 2.

The grenade launcher barrel 15 is arranged in a connecting piece 37 , which closes it around almost three quarters of its circumference and over almost its entire length. The connector 37 has on its left side an over its entire length extending longitudinal slot 39 , which allows the Granatwer ferlauf 15 can swing out with a fixed connector 37 ken.

The connector 37 connects a vertical Querach se 31 with a floor case 17th The transverse axis 31 is located on the front side of the connecting piece 37 and on the right next to the grenade launcher barrel 15 . The Bodenge housing 17 is located on the back of the connector 37 and forms a push floor 41 ( Fig. 3); the Bo dengehäuse 17 carries on its underside a Granatwer fergriffstück 19 which receives a cocking device with egg NEM trigger 21 and a firing pin 43 ( FIG. 5) and has a trigger guard 25 . A fuse 23 is formed by a grenade launcher handle 19 transversely penetrating the shaft, on both ends and in each case on the outside of the grenade launcher handle 19 is a service lever 23 for securing. One of the at the locking lever 23 is therefore 19 spanning hand operable with the thumb of the grenade launcher grip, no matter whether it is the right or the left hand. The shaft of the fuse 23 defines the trigger 21 or the firing pin 43 of the trigger device.

A hand guard 27 sits above the connector 37 , giving the gun barrel 3 around.

The grenade launcher barrel 15 is loaded by two swing-open springs, which surround the transverse axis 31 and are supported on the connecting piece 37 , in the direction of the reloading position ( FIG. 2).

On its side opposite the longitudinal slot 39, the connecting piece has a relief opening 45 for lightening the weight ( FIG. 4). As can be seen in FIGS. 4 and 5, a visor holder 47 is also formed on the top of the connecting piece 37 and on both sides thereof, which has the shape of two tapped holes and a support surface which is continuous or divided.

The cross hole for receiving the fastening pin 33 has already been described above; However, it is shown in FIGS. 4 and 5, a further transverse bore 51 , which is set up for receiving a fastening pin and is used to mount the grenade launcher 13 shown on a different Ge than that shown in FIGS. 1 to 3.

The cross bore 51 , which is not set up for receiving a fastening supply pin 33 , is closed by a Zapfenan arrangement to prevent the wrong cross bore 51 from being used accidentally when fitting the grenade launcher 13 to a rifle.

Furthermore, a stop device 63 is formed on the connecting piece 37 , against which the grenade launcher barrel 15 starts when the barrel is closed.

In the grenade launcher handle 19 is a centrally arranged ter, extending in the longitudinal direction, two-leg rocker arm 53 is tiltable about a transverse tilt axis. This is pressed by a spring with its rear end upward, so that this rear end engages in a longitudinal groove 55 which is formed at the rear end and at the bottom of the grenade launcher barrel 15 . The grenade launcher barrel 15 must be in its firing position ( Fig. 1).

If the grenade launcher barrel 15, on the other hand, is swung out ( FIG. 2) and is swiveled back into its firing position, then the rear end of the rocker arm 53 runs against the outer circumference of the grenade launcher barrel 15 and is pressed downward by this in order to ultimately fall into the longitudinal groove 55 can.

At the front end of the rocker arm 53 , a push button 57 is formed, which protrudes between the trigger guard 25 and the trigger 21 from the bottom housing 17 and handle 19 to un th. It is possible, for example, to press the push button 57 upwards with the pointer ger and thus pivot the rocker arm 53 until its front end releases the longitudinal groove 55 and the grenade launcher barrel 15 , driven by egg suspension 49 , into the position of FIG swings. 2nd The pivoting usually takes place after the trigger 21 has been actuated to tension and trigger the tension trigger device, that is to say after the shot.

The empty cartridge case then either falls out of the barrel 15 as a result of centrifugal force, or it must be gripped and pulled out with the thumb and a finger under the edge of the cartridge. For this purpose, two mutually opposite recesses 61 are provided in the barrel wall at the rear end of the barrel 15 , which enable the cartridge rim to engage below. A separate extraction or ejection device is not available. Subsequently, a new cartridge 59 is inserted into the barrel 15 and this is swiveled in again until the rocker arm 53 falls into the longitudinal groove 55 again.

A right-handed shooter can leave the right hand on the grenade launcher grip 19 in the after-loading process just described and carry out all reloading operations with the left hand. It is therefore possible to deliver a real rapid fire with the grenade launcher, which is particularly advantageous when the enemy is forced to take cover to enable a safe change of position of his own troops. A left-handed shooter will have to move to reload and will therefore be a little longer than a right-handed shooter. However, since he is not forced to pull the trigger with the inexperienced (right) hand, he will not have to accept any loss of accuracy.

The bottom housing 17 has on the left next to the impact floor a vertical ledge 65 projecting towards the left outside, from which the apex is barely visible in FIG. 2. Complementary to this bar 65 is on the back of the grenade launcher barrel 15 and from this to the left outside and rear projecting a projection ausgebil det, the inside of which has a counter-formation 67 , which has the shape of a vertical groove. The bar 65 and the groove 67 each have a surface (not to see hen), which is part of a cylindrical surface area around the central axis of the vertical transverse axis 31 . The two Zy relieving lateral surface cutouts are spaced apart to the transverse axis 31 so that they run 15 engage one another as possible without play when swinging of the grenade launcher. So the shot of the relative position of barrel 15 and bump bottom 41 on the side of the longitudinal slot 39 is maintained who the. On the other hand (the right side) because of the tubular design of the connecting piece 37 (see FIG. 4) and its one-piece training together with the bottom housing 17 , an additional support for the grenade launcher barrel 15 can be dispensed with.

The embodiment of FIGS. 4 and 5, as already mentioned above, has on each side at least one surface and two threaded bores which form two visor brackets 47 . A frame or head sighting arrangement (not shown) can optionally be attached to the right or left sight holder 47 , depending on the shooter being a right-handed or left-handed shooter. The Vi sieranordnung is implementable on a mounting base, so that the mounting base for mounting on the desired side of the grenade launcher 13 is aligned and then the visor assembly can be attached in the correct orientation on the mounting base. This visor arrangement is independent of the Gewehrvisie tion 9th

The grenade launcher barrel 15 and the component formed from the connecting piece 37 and the bottom housing 17 are made of light metal, the grenade launcher handle 19 and the hand guard 27 are made of plastic, and only the parts of the tensioning device and the butt plate 41 are made of steel. The weight of the add-on grenade launcher 13 is therefore low, although it has a very stable construction.

The attached grenade launcher 13 can, if necessary, also be used separately from a rifle 1 carrying it.

Claims (15)

1. attached grenade launcher ( 13 ) for attachment to a Ge weir ( 1 ), with a grenade launcher barrel ( 15 ) which is pivotable about a fixed transverse axis ( 31 ) attached to its mouth, with a bottom housing ( 17 ), which carries a trigger device with a trigger ( 21 ) and a push bottom ( 41 ), and with a connecting piece ( 37 ) which supports the transverse axis ( 31 ) and with the bottom housing ( 17 ), characterized in that Connection piece ( 37 ) surrounds the grenade launcher barrel ( 15 ) over at least part of its length so far that only one longitudinal slot ( 39 ) is left in wesentli chen, which is necessary for swiveling the grenade launcher barrel ( 15 ). 2. attached grenade launcher ( 13 ) according to claim 1, characterized in that the bump bottom ( 41 ) has a laterally to the longitudinal slot ( 39 ) projecting bar ( 65 ), and that the grenade launcher barrel ( 15 ) at its rear end one has an extension projecting towards the rear which engages the bar ( 65 ) with a counter-training ( 67 ) when the grenade launcher barrel ( 15 ) is not swung out. 3. cultivation grenade launcher ( 13 ) according to claim 2, characterized in that the counter-training is designed as a groove ( 67 ), and that the rear surface and the rear surface of the projecting bar ( 65 ) at least approximately each as part of a cylinder cover are formed, the central axis of which coincides with that of the transverse axis ( 31 ), and that the surfaces ( 15 ) lie snugly on one another when the grenade launcher is not pivoted out. 4. attached grenade launcher ( 13 ) according to one of claims 1 to 3, characterized in that the longitudinal slot ( 39 ) is open towards the front, so that the connec tion piece ( 37 ) is designed as a section of a U-angle profile. 5. attached grenade launcher ( 13 ) according to any one of claims 1 to 4, characterized in that the connecting piece ( 37 ) has at least one recess ( 45 ) for weight relief Ge. 6. Add-on grenade launcher ( 13 ) according to one of claims 1 to 5, characterized in that the grenade launcher barrel ( 15 ) on its rear side has two opposite recesses ( 61 ) which penetrate the wall from behind. 7. attached grenade launcher ( 13 ) according to one of claims 1 to 6, characterized in that the side ne ben the grenade launcher barrel ( 15 ) arranged transverse axis ( 31 ) extends vertically, so that the grenade launcher barrel ( 15 ) can be swung out laterally. 8. attached grenade launcher ( 13 ) according to claim 7, characterized in that the grenade launcher barrel ( 15 ) can be swung out to the left. 9. attached grenade launcher ( 13 ) according to any one of claims 1 to 8, characterized in that the Abzugsein direction has a cocking mechanism. 10. Add-on grenade launcher ( 13 ) according to one of claims 1 to 9, characterized in that a sprung rocker arm ( 53 ) is provided, which in its Ruhela ge with one end in a formation ( 55 ) on the outside of the grenade launcher barrel ( 15 ) engages near its rear end and releases it after overcoming the spring force engaging on it. 11. mounted grenade launcher ( 13 ) according to claim 10, characterized in that the rocker arm ( 53 ) is extended beyond its tilt axis, and that a push button ( 57 ) is arranged at the free end of the extension. 12. Add-on grenade launcher ( 13 ) according to one of claims 1 to 11, characterized in that a handle ( 19 ) with a trigger guard ( 25 ) is arranged on the bottom housing ( 17 ). 13. attached grenade launcher ( 13 ) according to claim 11 or 12, characterized in that the push button ( 57 ) protrudes from above into the space between the trigger ( 21 ) and trigger bracket ( 25 ). 14. attached grenade launcher ( 13 ) according to any one of claims 1 to 13, characterized in that at least in front of the side above the grenade launcher barrel ( 15 ) at least one transverse bore ( 51 ) for a fastening pin ( 33 ) is arranged, the not -used cross holes are preferably closed, and on the back of a horizontally extending slot arrangement ( 35 ), which is preferably open to the rear. 15. attached grenade launcher ( 13 ) according to any one of claims 1 to 14, characterized by a visor holder ( 47 ) on each of the two sides for either the right or left side attachment of a Vi siereinrichtung.